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Titolo:
Investigation of deep levels in semi-insulating GaAs by means of a thermally activated piezoelectric photoacoustic measurements
Autore:
Ikari, T; Fukuyama, A; Akashi, Y;
Indirizzi:
Miyazaki Univ, Dept Elect & Elect Engn, Miyazaki 8892192, Japan Miyazaki Univ Miyazaki Japan 8892192 Elect Engn, Miyazaki 8892192, Japan Miyazaki Univ, Dept Mat Sci, Miyazaki 8892192, Japan Miyazaki Univ Miyazaki Japan 8892192 pt Mat Sci, Miyazaki 8892192, Japan
Titolo Testata:
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
fascicolo: 1-3, volume: 4, anno: 2001,
pagine: 253 - 255
SICI:
1369-8001(200102/06)4:1-3<253:IODLIS>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
SEMIINSULATING GAAS; CRYSTALS; STATES;
Keywords:
semi-insulating GaAs; temperature variation of the piezoelectric photoacoustic signal; deep levels; nonradiative recombination;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
--discip_EC--
Citazioni:
5
Recensione:
Indirizzi per estratti:
Indirizzo: Ikari, T Miyazaki Univ, Dept Elect & Elect Engn, 1-1 Gakuen Kibanadainishi, Miyazaki 8892192, Japan Miyazaki Univ 1-1 Gakuen Kibanadainishi MiyazakiJapan 8892192 n
Citazione:
T. Ikari et al., "Investigation of deep levels in semi-insulating GaAs by means of a thermally activated piezoelectric photoacoustic measurements", MAT SC S PR, 4(1-3), 2001, pp. 253-255

Abstract

The temperature variation of the piezoelectric photoacoustic (PPA) signal intensity of semi-insulating (SI) GaAs from 20 to 150K was measured. Four peaks at 50, 70, 110 and 125K were observed in the PPA signal. From the theoretical analysis based on the rate equations of electrons in the conductionband and several deep levels, we concluded that the observed four peaks were due to the nonradiative electron recombinations via EL6, EL7, EL15 and an unknown deep level, respectively. Deep levels with extremely low concentrations (10(11)-10(15)cm(-3)) were clearly identified conveniently in SI-GaAs by using the PPA method for the first time. (C) 2001 Elsevier Science Ltd. AII rights reserved.

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Documento generato il 10/07/20 alle ore 12:53:52